Populations of frogs and other amphibians are declining at an average rate of 3.7 percent each year, according to a new U.S. Geological Survey study.
Karen Bleier/AFP/Getty Images
May 24, 2013 Populations of frogs, salamanders and other amphibians are declining at an average rate of 3.7 percent each year, according to a U.S. Geological Survey study released this week.
For centuries, Russians believed putting a brown frog in their milk would keep it fresh. Now scientists are finding chemicals in the frog's slimy goo that inhibit the growth of bacteria and fungi.
December 17, 2012 Secretions from a brown frog's skin contain chemicals that might be useful in fighting bacteria. Russian researchers are cataloging compounds in the slimy goo. Although the odds against them are long, the researchers hope their work will aid the search for new drugs.
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